4.16.3.5 Default Map Methods

The following MapMethod types are known to
'SU_messages':query_map(MapMethod, RawInput,
Result, Answer) and to the built-in fall-back mapping:

char(Pairs)

In this map method RawInput is assumed to be a code-list.

Pairs is a list of Name-Abbreviations
pairs, where Name is a ground term, and
Abbreviations is a code-list. The first non-whitespace
character of RawInput is used for finding the corresponding name
as the answer, by looking it up in the abbreviation lists. If the
character is found, Result is success, and
Answer is set to the Name found; otherwise, Result is
failure.

=

No conversion is done, Answer is equal to RawInput and
Result is success.

debugger

This map method is used when reading a single line debugger command. It
parses the debugger command and returns the corresponding abstract
command term. If the parse is unsuccessful, the answer
unknown(Line,Warning) is returned. This is to allow the user to
extend the debugger command language via debugger_command_hook/2,
see Debug Commands.

The details of this mapping can be obtained from the
library('SU_messages') file.

Note that the fall-back version of this mapping is simplified, it only
accepts parameterless debugger commands.